US7050800B2 - Method and apparatus for WLAN-UMTS interworking employing UMTS air interface - Google Patents

Method and apparatus for WLAN-UMTS interworking employing UMTS air interface Download PDF

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Publication number
US7050800B2
US7050800B2 US10/319,180 US31918002A US7050800B2 US 7050800 B2 US7050800 B2 US 7050800B2 US 31918002 A US31918002 A US 31918002A US 7050800 B2 US7050800 B2 US 7050800B2
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United States
Prior art keywords
umts
wlan
format
terminal
message
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Expired - Fee Related, expires
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US10/319,180
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US20040192291A1 (en
Inventor
Kamel M. Shaheen
Leonid Kazakevich
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InterDigital Technology Corp
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InterDigital Technology Corp
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Assigned to INTERDIGITAL TECHNOLOGY CORPORATION reassignment INTERDIGITAL TECHNOLOGY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAZAKEVICH, LEONID, SHAHEEN, KAMEL M.
Priority to US10/319,180 priority Critical patent/US7050800B2/en
Priority to ES03771677T priority patent/ES2271658T3/en
Priority to KR1020057001800A priority patent/KR100701909B1/en
Priority to AT03771677T priority patent/ATE339071T1/en
Priority to HK05110857.6A priority patent/HK1079025B/en
Priority to CA002493742A priority patent/CA2493742A1/en
Priority to CNB038182971A priority patent/CN100356800C/en
Priority to KR1020057016777A priority patent/KR20050096200A/en
Priority to DE60308194T priority patent/DE60308194T2/en
Priority to AU2003256635A priority patent/AU2003256635A1/en
Priority to PCT/US2003/022728 priority patent/WO2004012374A2/en
Priority to JP2004524663A priority patent/JP2005535186A/en
Priority to EP03771677A priority patent/EP1527630B1/en
Priority to TW092120161A priority patent/TWI255619B/en
Priority to TW095127040A priority patent/TW200723762A/en
Priority to TW093105765A priority patent/TW200507660A/en
Publication of US20040192291A1 publication Critical patent/US20040192291A1/en
Priority to NO20050957A priority patent/NO20050957L/en
Priority to JP2005273770A priority patent/JP2006067610A/en
Priority to US11/433,958 priority patent/US7630709B2/en
Publication of US7050800B2 publication Critical patent/US7050800B2/en
Application granted granted Critical
Priority to US12/633,502 priority patent/US20100087189A1/en
Adjusted expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals

Definitions

  • the present invention relates to wireless communications. More particularly the invention deals with WLAN-UMTS interworking.
  • Subscribers such as mobile stations (UEs), to a universal mobile telecommunication system (UMTS) which are operating under a wireless local area network (WLAN) environment and desire to access the UMTS, can incur a significant increase in costs when accessing UMTSs in those areas where the UMTS system access would be of substantial cost.
  • WLAN wireless local area network
  • An alternative for accessing a UMTS without incurring such substantial costs is desirable.
  • the present invention provides a less expensive alternative for accessing a UMTS without incurring such substantial costs.
  • the composite systems of the present invention comprises a UMTS system underlayed by a WLAN system.
  • the UMTS is provided with a transceiver acting as a UMTS radio front-end for a UMTS subscriber operating in a WLAN environment.
  • the interface between the UMTS system and the end user (UE) is obtained through the WLAN interface.
  • the WLAN system converts received UMTS messages and/or traffic for pre-registered users into a format suitable for WLAN transmission to be delivered to users operating in WLAN environments.
  • the WLAN converts transmitted messages and traffic flows into UMTS formats which is then transmitted to the UMTS system by way of the UMTS transceiver supporting the WLAN system.
  • the WLAN users gain access to the UMTS system through a UMTS air interface employing a translator.
  • FIG. 1 is a diagram of a UMTS system underlayed by a WLAN system.
  • FIGS. 2 and 3 are diagrams showing the message utilized for the WLAN-UMTS interworking in accordance with the apparatus and methods of the present invention.
  • FIG. 1 shows an arrangement 10 useful in explaining the interworking between a UMTS system 12 and WLAN system 14 .
  • the arrangement of FIG. 1 will be described in conjunction with the technique for delivery of UMTS based services when a mobile station such as a remote terminal is served by the WLAN system.
  • FIG. 1 there is shown an arrangement similar to that of FIG. 1 .
  • the mobile station remote terminal (UE) 24 may also be a dual-mode terminal capable of communicating with a WLAN and a UMTS, for purposes of the present invention, a WLAN-capable terminal 24 is utilized.
  • UE 24 through its WLAN capability 24 a , registers with WLAN 14 , by communicating with an access point (AP) of the WLAN (see FIG. 1 ) at step S 1 .
  • WLAN 14 at step S 2 , registers the user identification (ID) for the UMTS service watch, communicating with UMTS transceiver 18 .
  • UMTS transceiver 18 is tuned for any services addressed to registered users' identifications (IDs).
  • UMTS 12 transfers such a service, in the example given a page message, at step S 3 , the page message being delivered to UMTS transceiver 18 .
  • UMTS transceiver 18 at step S 4 , typically from a radio tower 26 , transmits the page message over UMTS air interface 28 to a receiving radio tower 30 , to format converter 16 which, at step S 5 , converts the present (UMTS) format into a WLAN message format and, at step S 6 , communicates the page message, in WLAN message format, to WLAN 14 .
  • WLAN 14 at step S 7 , delivers the page message to mobile terminal 24 .
  • An acknowledgement is relayed from terminal 24 , at step S 8 , to WLAN 14 , the acknowledgement being transferred to format converter 16 at step S 9 and from there to UMTS transceiver 18 , at step S 10 , and finally to UMTS 12 , at step S 11 .
  • FIG. 3 shows a terminal 24 similar to that shown in FIG. 2 , which, through its WLAN capability 24 a , registers with WLAN 14 , at step S 1 .
  • the WLAN 14 at step S 2 , forwards the user registration to format converter 16 which, at step S 3 , changes the format into a UMTS message format and, at step S 4 , provides a UMTS package switched (PS) UMTS attachment directed to the UMTS transceiver 18 .
  • PS UMTS package switched
  • the PS attach completed message is transferred from UMTS 12 to UMTS transceiver 18 , at step S 6 , and from UMTS transceiver 18 to format converter 16 , at step S 7 .
  • Format converter 16 changes the format of the PS attach into a WLAN message format and, at step S 9 , conveys the message to WLAN 14 which, at step S 10 , provides the message to mobile terminal 24 .
  • Acknowledgement from terminal 24 to WLAN 14 occurs at step S 11 , from WLAN 14 to format converter 16 , at step S 12 , from format converter 16 to UMTS transceiver 18 , at step S 13 and the UMTS transceiver 18 to UMTS 12 , at step S 14 , thereby completing the acknowledgment.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
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  • Radio Relay Systems (AREA)

Abstract

A method enabling a wireless remote terminal (UE) to access a universal mobile telecommunication system (UMTS) through a wireless local area network (WLAN) wherein UMTS services are transmitted to a format converter from a UMTS transceiver and the format converter changes the format of received messages to a WLAN format before transmission to the UE which is operating in the WLAN mode.

Description

CROSS REFERENCE TO RELATED APPLICATIONS
This application claims priority from Application No. 60/399,787; filed on Jul. 31, 2002 which application is incorporated herein by reference.
FIELD OF INVENTION
The present invention relates to wireless communications. More particularly the invention deals with WLAN-UMTS interworking.
BACKGROUND
Subscribers, such as mobile stations (UEs), to a universal mobile telecommunication system (UMTS) which are operating under a wireless local area network (WLAN) environment and desire to access the UMTS, can incur a significant increase in costs when accessing UMTSs in those areas where the UMTS system access would be of substantial cost. An alternative for accessing a UMTS without incurring such substantial costs is desirable.
SUMMARY
The present invention provides a less expensive alternative for accessing a UMTS without incurring such substantial costs. The composite systems of the present invention comprises a UMTS system underlayed by a WLAN system. The UMTS is provided with a transceiver acting as a UMTS radio front-end for a UMTS subscriber operating in a WLAN environment. The interface between the UMTS system and the end user (UE) is obtained through the WLAN interface.
The WLAN system converts received UMTS messages and/or traffic for pre-registered users into a format suitable for WLAN transmission to be delivered to users operating in WLAN environments. In addition, the WLAN converts transmitted messages and traffic flows into UMTS formats which is then transmitted to the UMTS system by way of the UMTS transceiver supporting the WLAN system. The WLAN users gain access to the UMTS system through a UMTS air interface employing a translator.
BRIEF DESCRIPTION OF THE FIGURES
The present invention will be understood from a consideration of the accompanying description and drawings in which like elements are designated by like numerals and, wherein:
FIG. 1 is a diagram of a UMTS system underlayed by a WLAN system.
FIGS. 2 and 3 are diagrams showing the message utilized for the WLAN-UMTS interworking in accordance with the apparatus and methods of the present invention.
 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows an arrangement 10 useful in explaining the interworking between a UMTS system 12 and WLAN system 14. The arrangement of FIG. 1 will be described in conjunction with the technique for delivery of UMTS based services when a mobile station such as a remote terminal is served by the WLAN system.
Making reference to FIG. 2, and, where appropriate, FIG. 1, there is shown an arrangement similar to that of FIG. 1.
Only one mobile station 24 is shown for purposes of simplicity, it being understood that a plurality of such mobile terminals are serviced by the WLAN 14. Although the mobile station remote terminal (UE) 24 may also be a dual-mode terminal capable of communicating with a WLAN and a UMTS, for purposes of the present invention, a WLAN-capable terminal 24 is utilized.
User terminal (UE) 24, through its WLAN capability 24 a, registers with WLAN 14, by communicating with an access point (AP) of the WLAN (see FIG. 1) at step S1. WLAN 14, at step S2, then registers the user identification (ID) for the UMTS service watch, communicating with UMTS transceiver 18. UMTS transceiver 18 is tuned for any services addressed to registered users' identifications (IDs). When a UMTS service, such as a page, short message service (SMS), multimedia message service (MMS) or the like is to be delivered, UMTS 12 transfers such a service, in the example given a page message, at step S3, the page message being delivered to UMTS transceiver 18. UMTS transceiver 18, at step S4, typically from a radio tower 26, transmits the page message over UMTS air interface 28 to a receiving radio tower 30, to format converter 16 which, at step S5, converts the present (UMTS) format into a WLAN message format and, at step S6, communicates the page message, in WLAN message format, to WLAN 14. WLAN 14, at step S7, delivers the page message to mobile terminal 24. An acknowledgement is relayed from terminal 24, at step S8, to WLAN 14, the acknowledgement being transferred to format converter 16 at step S9 and from there to UMTS transceiver 18, at step S10, and finally to UMTS 12, at step S11.
FIG. 3 shows a terminal 24 similar to that shown in FIG. 2, which, through its WLAN capability 24 a, registers with WLAN 14, at step S1. The WLAN 14, at step S2, forwards the user registration to format converter 16 which, at step S3, changes the format into a UMTS message format and, at step S4, provides a UMTS package switched (PS) UMTS attachment directed to the UMTS transceiver 18. UMTS transceiver 18 transfers the UMTS PS attached to UMTS 12, at step S5.
The PS attach completed message is transferred from UMTS 12 to UMTS transceiver 18, at step S6, and from UMTS transceiver 18 to format converter 16, at step S7. Format converter 16, at step S8, changes the format of the PS attach into a WLAN message format and, at step S9, conveys the message to WLAN 14 which, at step S10, provides the message to mobile terminal 24. Acknowledgement from terminal 24 to WLAN 14 occurs at step S11, from WLAN 14 to format converter 16, at step S12, from format converter 16 to UMTS transceiver 18, at step S13 and the UMTS transceiver 18 to UMTS 12, at step S14, thereby completing the acknowledgment.

Claims (6)

1. A method in which a wireless terminal accesses a universal mobile telecommunication system (UMTS) through a wireless local area network (WLAN), comprising:
said terminal registering with the WLAN and acquiring a user ID;
responsive to the terminal registering with the WLAN, said WLAN registering the terminal's user ID with a UMTS transceiver on the UMTS for purposes of a UMTS service watch;
responsive to registering the terminal's user ID, said UMTS transceiver watching for UMTS service messages to be delivered to the terminal;
when a UMTS service message to be delivered to the terminal is detected, the UMTS transferring the service message to the UMTS transceiver;
the UMTS transceiver transmitting the UMTS service message over a UMTS air interface directly to a format converter on the WLAN;
the format converter converting the UMTS service message to a WLAN message format;
the format converter communicating the UMTS message in WLAN message format to the WLAN; and
the WLAN delivering the UMTS message in WLAN format to the terminal.
2. The method of claim 1, further comprising:
the terminal sending an acknowledge message (ACK) to the WLAN;
the WLAN transferring the ACK to the format converter;
the format converter converting the ACK to a UMTS message format;
the format converter transferring the ACK in UMTS message format to the UMTS transceiver; and
the UMTS transceiver transferring the ACK in UMTS format to the UMTS.
3. A method in which a wireless terminal accesses a universal mobile telecommunication system (UMTS) through a wireless local area network (WLAN), comprising:
said terminal registering with the WLAN and determining a user ID;
responsive to the terminal registering with the WLAN, said WLAN forwarding the user registration to a format converter on the WLAN;
the format converter changing the format of the registration into a UMTS message format, providing a UMTS packet switched (PS) attach using the registration in UMTS message format, and directing the UMTS PS attach directly to a UMTS transceiver over a UMTS air interface;
the UMTS transceiver transferring the UMTS PS attach to a UMTS, wherein the terminal user ID is registered for a UMTS service watch; p1 the UMTS providing a PS attach completed message, and transferring the PS attach completed message to the UMTS transceiver;
the UMTS transceiver transferring the PS attach completed message directly to the format converter on the WLAN via the UMTS air interface;
the format converter converting the format of the PS attach completed message into a WLAN message format and conveying the PS attach completed message in WLAN format to the WLAN;
the WLAN directing the PS attach completed message in WLAN format to the terminal.
4. The method of claim 3, further comprising:
the terminal sending a PS attach completed acknowledgment message (ACK) to the WLAN;
the WLAN forwarding the ACK to the format converter;
the format converter converting the ACK to a UMTS format and sending the ACK in UMTS format directly to the UMTS transceiver over the UMTS air interface; and
the UMTS transceiver sending the ACK in UMTS format to the UMTS, thereby completing the acknowledgment.
5. A system whereby a wireless terminal accesses a universal mobile telecommunication system (UMTS) through a wireless local area network (WLAN), comprising:
a WLAN comprising:
said WLAN configured to register a wireless terminal and determine a user ID for the terminal;
said WLAN configured, responsive to registering the terminal and determining its user ID, to register the terminal's user ID with a UMTS for purposes of a UMTS service watch; and
a format converter, comprising:
said format converter configured to receive WLAN messages, convert the WLAN messages into a UMTS format and transfer the WLAN messages in UMTS format over a UMTS air interface; and
said format converter configured to receive UMTS messages over a UMTS air interface, convert the UMTS messages into a WLAN format and transfer the UMTS messages in WLAN format to an access point (AP) of the WLAN; and
a UMTS comprising:
said UMTS configured to register a terminal user ID for purposes of a UMTS service watch;
said UMTS configured to watch for UMTS service messages for the terminal user ID; and
a UMTS transceiver configured to pass messages directly between itself and the format converter over a UMTS air interface.
6. The system of claim 5, wherein the UMTS transceiver is further configured to register the terminal's user ID for purposes of a UMTS service watch and watch for UMTS service messages for the terminal user ID.
US10/319,180 2002-07-31 2002-12-13 Method and apparatus for WLAN-UMTS interworking employing UMTS air interface Expired - Fee Related US7050800B2 (en)

Priority Applications (20)

Application Number Priority Date Filing Date Title
US10/319,180 US7050800B2 (en) 2002-07-31 2002-12-13 Method and apparatus for WLAN-UMTS interworking employing UMTS air interface
PCT/US2003/022728 WO2004012374A2 (en) 2002-07-31 2003-07-22 Method and apparatus for wlan-umts interworking employing umts air interface
EP03771677A EP1527630B1 (en) 2002-07-31 2003-07-22 Method and apparatus for wlan-umts interworking employing umts air interface
AT03771677T ATE339071T1 (en) 2002-07-31 2003-07-22 METHOD AND DEVICE FOR THE COOPERATION OF WLAN AND UMTS USING A UMTS AIR INTERFACE
HK05110857.6A HK1079025B (en) 2002-07-31 2003-07-22 Method and apparatus for wlan-umts interworking employing umts air interface
CA002493742A CA2493742A1 (en) 2002-07-31 2003-07-22 Method and apparatus for wlan-umts interworking employing umts air interface
CNB038182971A CN100356800C (en) 2002-07-31 2003-07-22 Method and device for WLAN-UMTS interworking using UMTS air interface
KR1020057016777A KR20050096200A (en) 2002-07-31 2003-07-22 Method and apparatus for wlan-umts interworking employing umts air interface
DE60308194T DE60308194T2 (en) 2002-07-31 2003-07-22 METHOD AND DEVICE FOR COOPERATING WLAN AND UMTS USING A UMTS AIR INTERFACE
AU2003256635A AU2003256635A1 (en) 2002-07-31 2003-07-22 Method and apparatus for wlan-umts interworking employing umts air interface
ES03771677T ES2271658T3 (en) 2002-07-31 2003-07-22 METHOD AND APPLIANCE FOR A WLAN-UMTS INTERFUNCTIONING USING AN UMTS AIR INTERFACE.
JP2004524663A JP2005535186A (en) 2002-07-31 2003-07-22 Method and apparatus for interoperation between WLAN and UMTS using UMTS air interface
KR1020057001800A KR100701909B1 (en) 2002-07-31 2003-07-22 Method and apparatus for WLAN-WMTS interworking to implement WMS radio interface
TW092120161A TWI255619B (en) 2002-07-31 2003-07-23 Method and apparatus WLAN-UMTS interworking employing umts air interface
TW095127040A TW200723762A (en) 2002-07-31 2003-07-23 Method and apparatus WLAN-UMTS interworking employing units air interface
TW093105765A TW200507660A (en) 2002-07-31 2004-03-04 Method and apparatus WLAN-UMTS interworking employing umits air interface
NO20050957A NO20050957L (en) 2002-07-31 2005-02-22 Method and apparatus for WLAN - UMTS collaboration using air interface
JP2005273770A JP2006067610A (en) 2002-07-31 2005-09-21 Method and apparatus for wlan-umts interworking employing umts air interface
US11/433,958 US7630709B2 (en) 2002-07-31 2006-05-15 Format converter for WLAN-UMTS interworking employing UMTS air interface
US12/633,502 US20100087189A1 (en) 2002-07-31 2009-12-08 Format converter for wlan-umts interworking employing umts air interface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39978702P 2002-07-31 2002-07-31
US10/319,180 US7050800B2 (en) 2002-07-31 2002-12-13 Method and apparatus for WLAN-UMTS interworking employing UMTS air interface

Related Child Applications (1)

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US11/433,958 Continuation US7630709B2 (en) 2002-07-31 2006-05-15 Format converter for WLAN-UMTS interworking employing UMTS air interface

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US20040192291A1 US20040192291A1 (en) 2004-09-30
US7050800B2 true US7050800B2 (en) 2006-05-23

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US10/319,180 Expired - Fee Related US7050800B2 (en) 2002-07-31 2002-12-13 Method and apparatus for WLAN-UMTS interworking employing UMTS air interface
US11/433,958 Expired - Fee Related US7630709B2 (en) 2002-07-31 2006-05-15 Format converter for WLAN-UMTS interworking employing UMTS air interface
US12/633,502 Abandoned US20100087189A1 (en) 2002-07-31 2009-12-08 Format converter for wlan-umts interworking employing umts air interface

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US11/433,958 Expired - Fee Related US7630709B2 (en) 2002-07-31 2006-05-15 Format converter for WLAN-UMTS interworking employing UMTS air interface
US12/633,502 Abandoned US20100087189A1 (en) 2002-07-31 2009-12-08 Format converter for wlan-umts interworking employing umts air interface

Country Status (13)

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US (3) US7050800B2 (en)
EP (1) EP1527630B1 (en)
JP (2) JP2005535186A (en)
KR (2) KR20050096200A (en)
CN (1) CN100356800C (en)
AT (1) ATE339071T1 (en)
AU (1) AU2003256635A1 (en)
CA (1) CA2493742A1 (en)
DE (1) DE60308194T2 (en)
ES (1) ES2271658T3 (en)
NO (1) NO20050957L (en)
TW (3) TW200723762A (en)
WO (1) WO2004012374A2 (en)

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